[ovs-dev] exporting port-to-ifindex mapping
blp at nicira.com
Fri Jun 7 22:27:22 UTC 2013
I think it should go into Interface.
The field should be mutable, because its value is not known when
ovs-vsctl (or another OVSDB client) adds the Interface record;
instead, ovs-vswitchd fills it in later. Otherwise your plan sounds
Other interface status columns, such as 'link_state' and 'mtu', behave
much as I would expect ifindex to behave.
Thanks a lot!
On Fri, Jun 07, 2013 at 03:19:28PM -0700, Neil Mckee wrote:
> Want to make sure I get off on the right foot... should the read-only ifindex field go
> into "Port" or "Interface" ? It seems like ovsrec_interface is the one with the pointer to netdev.
> So I just need to:
> 1. change the schema to add ifindex as a new field (with mutable: false),
> 2. update the schema checksum and rebuild vswitch-idl.[ch], then
> 3. edit bridge.c to make sure the ifindex from the netdev is pushed into
> ovsrec_interface whenever one of those is created.
> Does this sound like a plan?
> Is there an existing read-only field that behaves in a similar way so I can nose around?
> On May 28, 2013, at 5:01 PM, Ben Pfaff <blp at nicira.com> wrote:
> > On Tue, May 28, 2013 at 12:17:39PM -0700, Neil Mckee wrote:
> >> It would be helpful if ovs-vsctl(1) had a way to write out the
> >> netdev ifIndex numbers, where applicable, of the bridge ports. This
> >> would help to harmonize integration with SNMP, sFlow, LLDP and more.
> >> Could it be an extra column in the output from "ovs-vsctl list Port"
> >> ? Or a key-value pair in the "External-IDs" column?
> > It would be easy enough to add it to the "status" column,
> > e.g. status:ifindex. It might even be reasonable to add a standalone
> > "ifindex" column, since ifindex is a pretty universal concept. I
> > think I lean that way.
> > Are you willing and able to propose a patch?
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